Yesterday the official Focustronic account posted the following text and image
“***Update for the Mastertronic Essential***
Due to a series of uncontrollable events, the release of the Mastertronic Essential will need to be postponed by 1-2 months before shipping from the factory. We understand this may cause inconvenience but Focustronic is doing everything we can do speed this up and make up time, including OT for the factory when they resume from their holiday (CNY).
Anyone who has pre-ordered before this announcement will receive a free gift from Focustronic. Please email [email protected] with your pre order receipt before Jan 31, 2025 to be eligible.
Thank you for your consideration and understanding!”

The Mastertronic Essential is slated to be a new all in one tester capable of testing alkalinity, calcium, magnesium, nitrates and phosphates. It can utilize Focustronic’s reagents or the API Ca and NO3 reagents or the Red Sea Kh, Mg and PO4 reagents. The unit will also be compatible with the entire Focustronic ecosystem allowing it to control dosing, PAR and other aspects of a system using the combined might of the Powertronic, Dosetronic and Solartronic. Below is a video providing more details on the product.